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Description/Abstract

We have investigated the time constants of writing and decay of photorefractive gratings in 'blue' Rh:BaTiO3 at visible and near-infrared wavelengths. High reflectivity (> 200 %) double phase conjugation has been achieved at near-infrared wavelengths (730 - 809 nm) and efficient double colour pumped oscillation has been demonstrated between wavelengths separated by 150 nm